Comparing: M3 Stuart vs. Pz.Kpfw. 38 (t) vs. BT-7

Developed in 1938 through 1941 on the basis of the M2. Mass-produced from 1941. More than 13,000 vehicles in various versions were built, from the M3 to the M3A3, all of which were supplied to almost every allied nation under Lend-Lease. The M3 tanks were designated Stuart I by the British, while the M3A1 version received the designation Stuart III. The M3 first saw action in the battle at Sidi Rezegh.

Developed by the ČKD company for the Czechoslovakian Army in 1938. During the German occupation, the vehicle saw service in the Wehrmacht and was used in the Polish and French Campaigns, as well as on the Eastern Front. The tank saw combat on the front line until the middle of 1942. Approximately 1,400 vehicles in eight modifications (Ausf. A/B/C/D/E/F/S/G) were manufactured.

The Soviet wheeled caterpillar tank used in the 1930s–1940s. The third vehicle in the series of the Soviet light BT tanks. The BT-7 differed from its predecessors in the welded hull of a modified shape and a new engine. A total of 5,556 vehicles of different variants were produced and saw action during the Khalkhyn Gol battles, Polish Campaign, Winter War and World War II.